UR UNDERSTANDING of the ar ing in the wledge/Comprehension benefit of this 11. S
ID: 132220 • Letter: U
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UR UNDERSTANDING of the ar ing in the wledge/Comprehension benefit of this 11. SCIENCE, TEC AND SOCIET evel 1: evel wof the following respiratory systems is not ich rsociated with a blood supply? lungs of a vertebrate s the racheal system of an insect the skin of an earthwormm What are ar such a ban? 12. WRITE ABC prepare for in which I he mammalian heart in a pulmonary vein (C) left ventricle. (D) right ventricle. Air air is a direct measure of 13. SYNTHES , when you hold your breath, which of the following blood gas changes first leads to the urge to breathe? (A) rising O, B) falling O (C) rising CO, (D) falling CO2 s, air x into the re that amphibians and humans have in common is A) the number of heart chambers. B) a complete separation of circuits for circulation. (C) the number of circuits for circulation. (D) a low blood pressure in the systemic circuit lity to rid Level 2: Application/Analysis lfamolecule of CO2 released into the blood in your left toe isexhaled from your nose, it must pass through all of the following except (A) the pulmonary vein. B) the trachea. C) the right atrium. D) the right ventricle. tebrates ure For selec compared with the interstitial fluid that bathes active muscle cah bloodreaching these cels in arterioles has a incoming A) higher P B) higher Pco greater bicarbonate concentration.Explanation / Answer
1) The correct option is C. the tracheal system of an insect.
The tracheal system of an insect is not closely associated with a blood supply. Insects have tracheae instead of lungs. Air enters the tracheae by pores known as spiracles. The circulating fluid is haemolymph in the insect.
2) The correct option is A. left atrium.
Blood returning to the mammalian heart in a pulmonary vein drains first into the left atrium.
3) The correct option is D. Heart rate.
Pulse is a direct measure of the heart beats called as the heart rate. Heart rate is the speed of the heartbeat measured by the number of contractions of the heart per minute. It is close to the pulse measured at any peripheral point.
4) The correct option is C. Rising CO2.
When you hold your breath, Carbon dioxide gas changes first leads to the urge to breathe. CO2 is an essential heat-trapping gas, which is released through human activities and respiration process.
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